Dynamics of quantum correlations and linear entropy in a multi-qubit-cavity system
arXiv:quant-ph/0311181 · doi:10.1088/1464-4266/6/8/016
Abstract
We present a theoretical study of the relationship between entanglement and entropy in multi-qubit quantum optical systems. Specifically we investigate quantitative relations between the concurrence and linear entropy for a two-qubit mixed system, implemented as two two-level atoms interacting with a single-mode cavity field. The dynamical evolutions of the entanglement and entropy, are controlled via time-dependent cavity-atom couplings. Our theoretical findings lead us to propose an alternative measure of entanglement, which could be used to develop a much needed correlation measure for more general multi-partite quantum systems.
New discussions on the generality of entanglement-entropy relationship, one new reference, and other minor changes. 10 pages, 6 figures, accepted for publication in J.Opt. B: "Special Issue on Fluctuations & Noise in Photonics & Quantum Optics."
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Cited by in corpus (8)
- Ensemble averaged entanglement of two-particle states in Fock space
- Quantum Critical Dynamics of A Qubit Coupled to An Isotropic Lipkin-Meshkov-Glick Bath
- Critical points of the linear entropy for pure L-qubit states
- Generation of maximally entangled mixed states of two atoms via on-resonance asymmetric atom-cavity couplings
- Entanglement of a microcanonical ensemble
- Mixedness timescale in non-Hermitian quantum systems
- Mechanical qubit-light entanglers in hybrid nonlinear qubit-optomechanics
- Maximally entangled mixed states of two atoms trapped inside an optical cavity